The Tor Browser: dom/asmjscache/test/test_cachingMulti.html@b8a032363ba2

Incorporate requested changes from Mozilla in review:
https://bugzilla.mozilla.org/show_bug.cgi?id=1123480#c6

     1 <!DOCTYPE HTML>

     2 <html>

     3 <!--

     4 https://bugzilla.mozilla.org/show_bug.cgi?id=944821

     5 -->

     6 <head>

     7   <meta charset="utf-8">

     8   <title>asm.js browser tests</title>

     9   <script type="text/javascript" src="/tests/SimpleTest/SimpleTest.js"></script>

    10   <link rel="stylesheet" type="text/css" href="/tests/SimpleTest/test.css" />

    11 </head>

    12 <body>

    13   <a target="_blank" href="https://bugzilla.mozilla.org/show_bug.cgi?id=944821">asm.js browser tests</a>

    14   <p id="display"></p>

    15   <div id="content" style="display: none"></div>

    16   <pre id="test"></pre>

    18   <script>

    19   var jsFuns = SpecialPowers.Cu.getJSTestingFunctions();

    20   ok(jsFuns.isAsmJSCompilationAvailable(), "compilation is available");

    22   // generate four slightly different big asm.js modules and compile them async

    23   // so that we can hit the asm.js cache.

    25   var code = "function f() { 'use asm';\n";

    26   for (var i = 0; i < 5000; i++)

    27     code += "function g" + i + "() { return " + i + "}\n";

    28   ok(code.length > 100000, "code is long enough to definitely hit the cache");

    30   const N = 4;

    32   var codes = [];

    33   for (var i = 0; i < N; i++) {

    34     var code2 = code;

    35     code2 += "return g" + i + ";\n";

    36     code2 += "}\n";

    37     code2 += "ok(jsFuns.isAsmJSModule(f), 'f is an asm.js module')\n";

    38     code2 += "if (assertCacheHit) ok(jsFuns.isAsmJSModuleLoadedFromCache(f), 'cache hit');\n";

    39     code2 += "var gX = f();\n";

    40     code2 += "ok(jsFuns.isAsmJSFunction(gX), 'gX is an asm.js function')\n";

    41     code2 += "ok(gX() === " + i + ", 'gX returns the correct result')\n";

    42     code2 += "finishedEvalAsync();\n";

    43     codes.push(code2);

    44   }

    46   function evalAsync(code) {

    47     var blob = new Blob([code], {type:"application/javascript"});

    48     var script = document.createElement('script');

    49     script.src = URL.createObjectURL(blob);

    50     document.body.appendChild(script);

    51   }

    53   for (var i = 0; i < N; i++)

    54     evalAsync(codes[i]);

    56   var finishedCount = 0;

    57   var assertCacheHit = false;

    58   function finishedEvalAsync() {

    59     finishedCount++;

    61     if (finishedCount < 1 || finishedCount > 2*N) {

    62       throw "Huh?!";

    63     } else if (finishedCount == N) {

    64       assertCacheHit = true;

    65       for (var i = 0; i < N; i++)

    66         evalAsync(codes[i]);

    67     } else if (finishedCount == 2*N) {

    68       SimpleTest.finish();

    69     }

    70   }

    72   SimpleTest.waitForExplicitFinish();

    73   </script>

    75 </body>

    76 </html>

The Tor Browser / file revision